Sack holding and releasing device.



E. C. EDDY & P. N. BERGGREN.

SACK HOLDING AND RELEASING DEVICE. APPLICATION FILED AUG-31,1915.

1,177;851. Patnted Apr. 4,1916.

( V FIGURE 5 G U 2 F I R E f/VVEJ/TORE mags-1R ATTOR/VEY THE COLUMBIA PLANDGRAPH $10.. WASHINETOE, D. c.

UNITED s'rarus PATENT curios.

ELDRED C. EDDY, OF SANTA CLARA COUNTY, AND PETER N. BERGGREN, OF SAN JOSE, CALIFORNIA.

SACK HOLDING AND RELEASING DEVICE.

Specification of Letters Patent.

Patented Apr. 4, 1916.

Application filed August 31', 1915. Serial No. 48,199.

- z Releasing Devices, of which the following is a specification.

Our invention relates to sack holding and releasing devices, and the objects of our invention are to produce a device of the character indicated, 1st, that will be a positive support for the sack when opened and ready for filling; 211d, that will permit the hopper to be moved out of the way when the sack is filled and ready for removal; 3rd, that will automatically, release the sack while the hopper is being moved out of the way; 4th, that will automatically set a mechanism for the support of another sack while said hopper is being moved out of the way and in the same movement that releases the sack;

5th, that will permit of the hopper being positioned lower than in the ordinary form of sack holding devices; 6th, that can be adapted for use with any size of sack and that will be comparativelylight in weight, simple in construction and cheap to manufacture.

In the drawings which form a part hereof, and in which like reference characters designate like parts throughout the several views,I igure l is a perspective View of our device with a sack in position, parts being broken away. Fig. 2 is a side elevation of our device with a sack in'position and indicating the relative positions of'the several parts when a sack is ready for removal and when the mechanism is set for an empty sack. Fig. 3 is a detail perspective of the notched guide.

Referring now more particularly to the drawings, 1 indicates a framework or standard having the upper portion of its back built in solid and extending a distance above the top as shown at 2. The upper edge of back 2 is beveled as shown at 3 and a hopper 4 placed in position and hinged to back 2 as shown at 4 Iroperiy fastened to each side of hopper 4 are blocks 5 and 6, said blocks being so positioned as to rest on top bars 7 and 8 of standard 1 when the hopper is in a dropped position and thus act as supports for said hopper. Bars 9 and 10 are pivotally mounted on pins 11 and 12 in the forward legs of frame 1 and pass rear-' wardly through slots 13 and 14 in the rear legs of frame 1. Links 15 and 16 are pivotally secured to bars 9 and 10 approximately midway between the front and rear legs of frame 1, and preferably rigidly fixed to horizontal bars 17 and '18 positioned edgewise against the lower side of their respective top bars '7 and 8. Rigidly fastened to bars 17 and 18 and spaced a distance apart are vertical pins 19 and 20 in bar7, and 21 and 22 in bar 8, the same passing freely upwardly through their respective bars 7 and 8, projecting a distance above the upper sides of said bars as shown, and being normally held in this position by springs 23' and 24 connecting their respective bars 17 and 18 to the corresponding top bars 7 and 8. A rod 25 is shown connecting the free ends of bars 9 and 10 and fastened in place by pins 26 and 27. On the rear side of hopper 4 is fastened a bracket 28 fitted with a pin 29. Pivotally mounted on pin 29 is link 30, and pivotally connected to link 30 is arm 31, this connection forming joint 40. Through the opposite end of arm 31 is passed rod 25. Positioned in link 30 and near the junction of said link and arm 31 is a pin as shown at 32. To that portion of the back of frame 1 which is built in solid is fastened a bracket having an oblique slot formed therein as shown at 33, in the present instance said bracket being made of two members; one member 34 being shaped as shown and secured to the back offrame 1 and the other member 35 being shaped as shown and fastened to said first member 34, the space between the members 34 and 35 forming the oblique slot 33. In the upper end of member 35 is formed a notch 36, and in the lower end of the same member 35 is formed another notch 37. At 38 is in-.

dicated a sack in position for filling with its edge 39 pierced by pins 19, 20, 21 and 22.

7e will now describe in detail the man- I 21 and 22, that the same has been filled. and i is ready to be discharged. Hopper. 4 is swung upwardly and rearwardly onhinges 4 5 until it reaches a position as indicated in dotted lines at P. In reaching-this position link 30, arm 31 and bars 9 and 10 have been forced down to the positions shown in dotted lines at 30 31 and 9, pin passing down through notch 36 at the beginning of the movement travels to position 32 against the inner side of member 35 which, being on an oblique angle permits joint 40 to be slightly broken. as shown at 40 The downward movement of bars 9 and 10 draw bars 17 and 18 downward to a position indicated in dotted lines at 17 and consequently withdraws pins 19, 20, 21, and 22 to the position indicated in dotted. lines at 19 and 20 Sack 38 is now entirely free so that the upper edge thereof instantly falls away from the top of top bars 7 and 8 and said sack readily removed from its position in frame 1, the front of frame 1 being left open for this purpose. The continued movement of hopper 4 from position 4c to positionf (which is the close of its backward movement) causes pin 32 to pass from position 52 downwardly and outwardly through'notch 37. The moment said pin 32 has'passed out of slot 33 springs 23 and 2-i contract (having been extended in the movement above described) and thus snap bars Sand 10 and consequently pins 19, 20, 21, and 22 back into their normal position. Link 30 and arm 31 have now passed from positions 30 and 31 to positions shown in dotted lines at 30* and 31 and joint 40 from position 40 to position 40. pins 19,20,21, and 22, hopper 4 is brought back to its first position, whereupon link 30 and arm 31 again assume normal posi tions and the device is set for the release of another sack when the hopper i is again raised.

It will thus be seen that the release of the sack and the resetting of the mechanism is performed in the one upward and backward movement of the hopper. While blocks 5 and 6 are not essential elements in our device they act as supports for hopper 4 and also assist in holding edge 39 of the sack in position while said sack is being filled. All parts are of course of the desired sizes, shapes, proportions and materials, and while we haveshown and described in de An empty sack now being hung on.

tail one particular method of construction it is understood that minor changes in construction and operation may be made with out departing from the spirit of our in vention, as for instancea foot lever or hand lever connection may be used for retracting a support, a hopper pivotally mounted on said support, a pluralityof pins yieldingly mounted in. said support and normally pro.- jecting from the upper .portion thereof, and. mechanism connected to said pins and actuated by the pivotal movement of said hopper;

for retracting said pins for a predetermined period. I

3. In a device of the character described, a support, a'hopper movably-mounted {on said support, a plurality of pins yieldingly mounted in said support and normally projecting from the upper portion thereof, .and

mechanism connected to said pins and actu- 1 ated by said hopper for retracting said pins:

for a predetermined period, said mechanism comprising a bracket secured to said frame and. having an oblique slot formed therein;

a notch. formed in the upper end thereof and a notch formed in the lower end thereof, an arm connected to said yieldingly mounted pins, a link connected to said hopper-and said arm, and a pin fixed in saidlink in such a position as to pass into said slot through said notch at the upper end thereof and out of said slot through said notch at the lower end thereof at a predetermined period.' v

In testimony whereof we have hereunto affixed our signatures in presence of two subscribing witnesses.

ELDRED G. EDDY.

Witnesses:

'VVM. H. JOHNSON, It. C. BROWN.

Copies of this patent may be obtained for five cents each, by addressing the commissioner of Patents, Washington, D. C.

PETER N. BERGGREN.- 

